WASHINGTON — Facing assured defeat, Republican leaders decided Tuesday not to even hold a vote on the GOP's latest attempt to repeal the Obama health care law, surrendering on their last-gasp effort to deliver on the party's banner campaign promise.Leaving a lunch of Republican senators who'd gathered to discuss their next steps on the issue, Sen. Pat Roberts, R-Kan., said Senate Majority Leader Mitch McConnell, R-Ky., and other leaders decided that "the votes are not there, not to have the vote...